/*
 * Copyright 1999-2021 Alibaba Group Holding Ltd.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.fastffi;

import sun.misc.Unsafe;

import java.nio.charset.Charset;

public interface FFIStringProvider extends FFIJava {

    Charset UTF8 = Charset.forName("UTF-8");

    default String toJavaString() {
        byte[] data = new byte[(int) size()];
        FFIUnsafe.U.copyMemory(null, data(), data, Unsafe.ARRAY_BYTE_BASE_OFFSET, data.length * Unsafe.ARRAY_BYTE_INDEX_SCALE);
        return new String(data, UTF8);
    }

    long size();
    long data();
}
